Prevalence and genotype distribution of viral hepatitis B in Cambodia between 1990 and 2020: a systematic review and meta-analysis by Bunthen E, Pichetra Ou, Serge Ouoba, Md Razeen Ashraf Hussain, Ko Ko, Shintaro Nagashima, Aya Sugiyama, Tomoyuki Akita, Junko Tanaka

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Distribution of FIB-4 index in the general population: analysis of 75,666 residents who underwent health checkups by Aya Sugiyama, Akemi Kurisu, Bunthen E, Serge Ouoba, Ko Ko, Anvarjon Rakhimov, Tomoyuki Akita, Takayuki Harakawa, Toru Sako, Makoto Koshiyama, Takashi Kumada, Junko Tanaka

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Epidemiologic profile of hepatitis C virus infection and genotype distribution in Burkina Faso: a systematic review with meta-analysis by Serge Ouoba, Jean Claude Romaric Pingdwinde Ouedraogo, Moussa Lingani, Bunthen E, Md Razeen Ashraf Hussain, Ko Ko, Shintaro Nagashima, Aya Sugiyama, Tomoyuki Akita, Halidou Tinto, Junko Tanaka

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The impact of COVID-19 on hepatitis B and C virus prevention, diagnosis, and treatment in Bangladesh compared with Japan and the global perspective by Md Razeen Ashraf Hussain, Mohammad Ali, Aya Sugiyama, Lindsey Hiebert, M. Anisur Rahman, Golam Azam, Serge Ouoba, Bunthen E, Ko Ko, Tomoyuki Akita, John W. Ward, Junko Tanaka

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Despite low viral titer in saliva samples, Sanger-based SARS-CoV-2 spike gene sequencing is highly applicable for the variant identification by Ko Ko, Kazuaki Takahashi, Noriaki Ito, Aya Sugiyama, Shintaro Nagashima, Kei Miwata, Yoshihiro Kitahara, Mafumi Okimoto, Serge Ouoba, Golda Ataa Akuffo, Bunthen E, Tomoyuki Akita, Toshiro Takafuta, Junko Tanaka

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Long COVID occurrence in COVID-19 survivors by Aya Sugiyama, Kei Miwata, Yoshihiro Kitahara, Mafumi Okimoto, Kanon Abe, Bunthen E, Serge Ouoba, Tomoyuki Akita, Naoki Tanimine, Hideki Ohdan, Tatsuhiko Kubo, Akira Nagasawa, Toshio Nakanishi, Toshiro Takafuta, Junko Tanaka

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A longitudinal study of anti-SARS-CoV-2 antibody seroprevalence in a random sample of the general population in Hiroshima in 2020 by Aya Sugiyama, Fumie Okada, Kanon Abe, Hirohito Imada, Serge Ouoba, Bunthen E, Md Razeen Ashraf Hussain, Masayuki Ohisa, Ko Ko, Shintaro Nagashima, Tomoyuki Akita, Shinichi Yamazaki, Michiya Yokozaki, Eisaku Kishita, Junko Tanaka

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Seroepidemiological study of factors affecting anti-spike IgG antibody titers after a two-dose mRNA COVID-19 vaccination in 3744 healthy Japanese volunteers by Aya Sugiyama, Akemi Kurisu, Shintaro Nagashima, Kiyomi Hando, Khilola Saipova, Sayyora Akhmedova, Kanon Abe, Hirohito Imada, Md Razeen Ashraf Hussain, Serge Ouoba, Bunthen E, Ko Ko, Tomoyuki Akita, Shinichi Yamazaki, Michiya Yokozaki, Junko Tanaka

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Author Correction: Seroepidemiological study of factors affecting anti-spike IgG antibody titers after a two-dose mRNA COVID-19 vaccination in 3744 healthy Japanese volunteers by Aya Sugiyama, Akemi Kurisu, Shintaro Nagashima, Kiyomi Hando, Khilola Saipova, Sayyora Akhmedova, Kanon Abe, Hirohito Imada, Md Razeen Ashraf Hussain, Serge Ouoba, Bunthen E, Ko Ko, Tomoyuki Akita, Shinichi Yamazaki, Michiya Yokozaki, Junko Tanaka

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Exercising the Sanger Sequencing Strategy for Variants Screening and Full-Length Genome of SARS-CoV-2 Virus during Alpha, Delta, and Omicron Outbreaks in Hiroshima by Ko Ko, Kazuaki Takahashi, Shintaro Nagashima, Bunthen E, Serge Ouoba, Toshiro Takafuta, Yoshiki Fujii, Michi Mimori, Fumie Okada, Eisaku Kishita, Kunie Ariyoshi, Md Razeen Ashraf Hussain, Aya Sugiyama, Tomoyuki Akita, Masao Kuwabara, Junko Tanaka

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Residual risk of mother-to-child transmission of HBV despite timely Hepatitis B vaccination: a major challenge to eliminate hepatitis B infection in Cambodia by Bunthen E, Ko Ko, Rattana Kim, Shintaro Nagashima, Serge Ouoba, Md Razeen Ashraf Hussain, Tomoki Sato, Channarena Chuon, Kanon Abe, Aya Sugiyama, Kazuaki Takahashi, Tomoyuki Akita, Rathavy Tung, Vichit Ork, Md. Shafiqul Hossain, Vonthanak Saphonn, Junko Tanaka

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